75w90. If it has limited slip, additive is required.
Yes
An internal failure in the axle. It will need disassembled to know the actual cause.
Inside the rear axle.
It is on top of the rear axle.
75w90
Top of the rear axle.
It is on top of the rear axle.
It is on the top center of the rear axle.
It is on top of the center of the rear axle.
Top of the rear axle.
Top of the rear axle.
It is on the top center of the rear axle.